Perl Taint Protection Environment Variable input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Perl. Affected is an unknown function of the component Taint Protection. Such manipulation as part of Environment Variable leads to input validation. This vulnerability is uniquely identified as CVE-2016-2381. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Perl (Programming Language Software) (version unknown). It has been rated as critical. Affected by this issue is an unknown function of the component Taint Protection. The manipulation as part of a Environment Variable leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Perl might allow context-dependent attackers to bypass the taint protection mechanism in a child process via duplicate environment variables in envp.

The weakness was disclosed 04/08/2016 (Website). The advisory is shared for download at gossamer-threads.com. This vulnerability is handled as CVE-2016-2381 since 02/12/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 89100 (Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : perl vulnerabilities (USN-2916-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169150 (SUSE Enterprise Linux Security Update for perl (SUSE-SU-2016:2246-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (89100) and SecurityFocus (BID 83802†). The entries VDB-103835 and VDB-108025 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 89100
Nessus Name: Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : perl vulnerabilities (USN-2916-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for perl FEDORA-2016-5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/12/2016 🔍
02/29/2016 +17 days 🔍
03/01/2016 +1 days 🔍
03/02/2016 +1 days 🔍
04/08/2016 +36 days 🔍
04/08/2016 +0 days 🔍
04/09/2016 +1 days 🔍
07/13/2022 +2286 days 🔍

Sourcesinfo

Advisory: USN-2916-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2381 (🔍)
GCVE (CVE): GCVE-0-2016-2381
GCVE (VulDB): GCVE-100-81872

OVAL: 🔍

SecurityFocus: 83802 - Perl 'perl.c' CVE-2016-2381 Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 04/09/2016 15:28
Updated: 07/13/2022 08:25
Changes: 04/09/2016 15:28 (45), 09/29/2018 12:45 (33), 07/13/2022 08:25 (3)
Complete: 🔍
Cache ID: 216:C99:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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